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| Paleosandstorm characteristics and lake evolution history deduced from investigation on lacustrine sediments——The case of Hongjiannao Lake, Shaanxi Province | |
| 引用本文： | SHEN Ji WANG Yong YANG Xiangdong ZHANG Enlou YANG Bao JI Junfeng. Paleosandstorm characteristics and lake evolution history deduced from investigation on lacustrine sediments——The case of Hongjiannao Lake, Shaanxi Province[J]. 科学通报(英文版), 2005, 50(20): 2355-2361. DOI: 10.1007/BF03183747 |
| 作者姓名： | SHEN Ji WANG Yong YANG Xiangdong ZHANG Enlou YANG Bao JI Junfeng |
| 作者单位： | [1]Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China [2]Graduate School, Chinese Academy of Sciences, Beijing 100039, China [3]Key Laboratory of Ice and Cold Region Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China [4]Institute of Surfacial Geochemistry, State Laboratory of Mineral Deposits Research, Department of Earth Sciences. Nanjing University, Nanjing 210009, China |
| 摘 要： | Sediment cores from desert lakes serve as good records of the frequency and intensity of sandstorms in history. By multi-proxy analysis of grain-size, magnetic susceptibility, TOC and Rb/Sr ratio, the paleosandstorm characteristics and lake evolution history in Yulin Area for the past 80 years, are discussed in this article. It is revealed that Hongjiannao Lake formed in about 1928 A.D. and in its initial stage sandstorms were prevalent with three extremes taking place in 1936 A.D., 1939 A.D. and 1941 A.D.. During the expansion period of 1952-1960 A.D., inflow waters to the lake increased sharply and a lot more weathered materials were carried into the lake. The frequency and intensity of sandstorms have reduced a lot since 1960s and the ＂double peaks＂ feature of the grain-size frequency curve has changed into the ＂single peak＂ feature. Study on the catchment ecology of the lake shows that the occurrence of sandstorms has been effectively restrained by the forest plantation and water and soil conservation. |
| 关 键 词： | 陕西省 湖泊 沉积物 沙暴 磁化系数 进化历史 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-07-112005-09-08 |
Paleosandstorm characteristics and lake evolution history deduced from investigation on lacustrine sediments—The case of Hongjiannao Lake, Shaanxi Province |
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| Ji Shen,Yong Wang,Xiangdong Yang,Enlou Zhang,Bao Yang,Junfeng Ji. Paleosandstorm characteristics and lake evolution history deduced from investigation on lacustrine sediments—The case of Hongjiannao Lake, Shaanxi Province[J]. Chinese science bulletin, 2005, 50(20): 2355-2361. DOI: 10.1007/BF03183747 | |
| Authors: | Ji Shen Yong Wang Xiangdong Yang Enlou Zhang Bao Yang Junfeng Ji |
| Affiliation: | 1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008, Nanjing, China 2. Graduate School, Chinese Academy of Sciences, 100039, Beijing, China 3. Key Laboratory of Ice and Cold Region Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000, Lanzhou, China 4. Institute of Surfacial Geochemistry, State Laboratory of Mineral Deposits Research, Department of Earth Sciences, Nanjing University, 210009, Nanjing, China |
| Abstract: | Sediment cores from desert lakes serve as good records of the frequency and intensity of sandstorms in history. By multi-proxy analysis of grain-size, magnetic susceptibility, TOC and Rb/Sr ratio, the paleosandstorm characteristics and lake evolution history in Yulin Area for the past 80 years. are discussed in this article. It is revealed that Hong-jiannao Lake formed in about 1928 A.D. and in its initial stage sandstorms were prevalent with three extremes taking place in 1936 A.D., 1939 A.D. and 1941 A.D. During the expansion period of 1952–1960 A.D., inflow waters to the lake increased sharply and a lot more weathered materials were carried into the lake. The frequency and intensity of sandstorms have reduced a lot since 1960s and the “double peaks” feature of the grain-size frequency curve has changed into the “single peak” feature. Study on the catchment ecology of the lake shows that the occurrence of sandstorms has been effectively restrained by the forest plantation and water and soil conservation. |
| Keywords: | lacustrine sediment paleosandstorm characteristics lake evolution history Hongjiannao Lake. |
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